Compare quotes/windows

Hi, I've got three quotes/estimates for a job and three different windows. I'd like some discussion of the various quotes. First
I've got 10 double hung windows, 2 awning windows, 2 bay windows and a bow. so, first bid was $10,155 for CertainTeed, second was $14,901 for Schuco and last was $11,350 for the Great Lakes PlyGem windows. Anyone care to comment/compare? Thanks, Tom

I currently have certainteed in the basement of my home and they are a good company but it seems the prices your are quoted are a bit high. I am currently replacing 24 double hungs in my home and started with a 24K bid from a very good company, Thompson Creek Windows here in MD (local) Through negotiation, they dropped to about 500 per window installed with cleanup and a very good guarantee. Hope this helps. By the way Thompson Creek has a website.

Any of your quotes are reasonable if you have 2 bays and a bow in the order. The Schucos quote is really cheap for that window. I would have thought they would have been at least 3 thousand more. Plygem I don't know anything about.